Amplifying the power of the environmental field by strengthening movement infrastructure

Mosaic is systemically building the connectivity, alignment, and power the environmental movement needs to win the biggest victories.

Our focus

We fund essential shared tools and connections that advocates and activists need, such as networks, data, communications, training, trust building, and more. Also known as movement infrastructure, these are the keys to win the fights that matter most on climate, environment, and justice.

Our work in action

In just three years, we have made 304 uniquely collaborative grants, totaling $20M, and supporting 3,500 benefiting organizations across the country. These projects are building population-level power and driving policy wins.

Our model

We are guided by the expertise of some of the foremost environmental leaders in the country, the support of diverse funders, and the rich learnings we gain from our grantees and other field leaders.

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Mosaic is fiscally sponsored by Tides Center, a 501(c)(3) non-profit organization. Your gift may be tax deductible pursuant to §170(c) of the Internal Revenue Code. Please visit for additional information.